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@visx/vendor

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vendored packages for visx

31 lines (30 loc) 760 B
"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.default = variance; function variance(values, valueof) { let count = 0; let delta; let mean = 0; let sum = 0; if (valueof === undefined) { for (let value of values) { if (value != null && (value = +value) >= value) { delta = value - mean; mean += delta / ++count; sum += delta * (value - mean); } } } else { let index = -1; for (let value of values) { if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { delta = value - mean; mean += delta / ++count; sum += delta * (value - mean); } } } if (count > 1) return sum / (count - 1); }